Step 1: Finish making Avengers: Infinity War. Step 2: Go on a press junket where you promote the film with a knock-off version of The Brady Bunch theme. That’s what the movie cast did on Jimmy Kimmel Live with Robert Downey Jr, Scarlett Johansson, Chris Pratt, Chris Evans, Chadwick Boseman, and more. Also, who knew Chris Pratt could sing?

Avengers: Infinity War is coming this Friday, April 27th. Not everyone will be lucky enough to see the movie on release day, so Marvel has a big request for everyone who does: no spoilers, please. They even made a public service announcement video with actors from the movie with their plea. It includes Robert Downey Jr., Karen Gillan, Chris Pratt, Anthony Mackie, Tom Holland, and more. Get your tickets early so you don’t miss out, and no spoilers!